Island



UNITED STATES FFICE.

PATENT MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 339,912, dated April 13, 1886.

Application filed January 21, 1886.

T0 aZZ whom it may concern:

Be it known that I, CHARLES B. Mnxsorf, a citizen of the United States, residing at \Vesterly, in the con nty of \Vashington and State of Rhode Island, have invented new and useful Improvements in Mechanical Movements, of which the following is a specification.

This invention relates to a device for transmitting to a shaft from a pulley mounted loosely thereon a revolving motion in the reverse direction to that in which the pulley is moved. The peculiar and novel combination of parts employed for this purpose is pointed out in thefollowing specification and claims and illustrated in the accompanying drawings, in whieh Figure 1 is an end view, partly in section. Fig. 2 is a longitudinal central section of the same. Fig. 3 is an end view of a modification. Fig. 4 is a longitudinal central section of the same. Fig. 5 is an end view of another modification. Fig. 6 is a longitudinal central section of the same.

Similarletters indicate corresponding parts.

In the drawings, the letter S designates a shaft, on which are mounted a fast pulley, I, and a loose pulley, P, and to which motion is imparted in the direction of arrow 1 when the belt is on the fast pulley. On this shaft is loosely mounted the brake-wheel O, and a brake, D, serves to arrest the motion of the brake-wheel.

In the' example shown in the drawings the brake consists of ashoe, D, secured to one end of alever, D, which hasits fulcrum on apivot, d, and carries at its opposite end a pedal, d, Fig. 5, and the brake-wheel O has a smooth surface, so that by depressing the pedal (1 the movement of the brake wheel is arrested by frictional contact between the brake-shoe and the face of the brake-wheel. Other devices may, however, be substituted for the brakelever and the smooth faced wheel 0, as will readily suggest themselves to a competent mechanic.

On the loose pulley P is firmly secured a cog-wheel, A, and the brake-wheel O carries a cog-wheel, B.

In order to transmit motion from the loose pulley, additional gears are used,which, how- Serial No. 189,349. (No model.)

ever, may be arranged in various positions. In the example shown in Figs. 1 and 2 gearwheels A B are used for this purpose, and those gear-wheels are mounted on the shaft a, which has its bearing in an arm, b, extending from hub E. This hub is fast on the main shaft S, and the cog wheel A gears into cogwheel A and the cog-wheel B into cog-wheel B. If the drivingbelt is thrown on the loose pulley and imparts to it motion in the direction of arrow 1, the cog-wheel A will turn in the same direction and impart motion to cogwheels A and B in the direction of arrow 2, and by the action of cog-wheel B on cog-wheel B the brake-wheel will be turned in the direction of arrow 1; but if the brake is applied to the brake-wheel so as to prevent it from moving, the cog-wheel B is compelled to travel around the cog-wheel B, carrying with it the arm I) and hub E, and since this hub is firmly mounted on the main shaft S, said shaft will be turned in the direction of arrow 2, orin the direction the reverse to that in which the loose pulley l is turned. If the belt is thrown up on the fast pulley I the shaft S is turned in the direction of arrow 1, and if the belt is thrown upon the loose pulley P and the brake is applied to the brake-wheel O the shaft S is turned in the direction of arrow 2.

In the example shown in Figs. 3 and 4 the shaft a, instead of being mounted in an arm which is fast to the main shaft S, has its bearing in a box, (6*, secured in the interior of the brake-wheel O, which is mounted loosely on shaft S, and the gear-wheel B is mounted firmly on the said shaft S and has its cogs on the inside of its rim. The gear-wheel A, which is fast to the loose pulley P, gears into the gear wheel A, and the gearwheel B gears into the cog-wheel B. If the belt is thrown onto the loose pulley I the cog-wheel A is turned in the direction of arrow 2, and by the action of the gear-wheel B the brake-wheel is caused to revolve around the shaft in the direction of arrow 2; but if the brake is applied to the brake-wheel so that it cannot turn on the shaft, the gear-wheel B turns the gear-wheel B, and consequently the main shaft S, in the direction of arrow 2, or in a direction reverse to that in which the loose pulley is moved by the belt.

By arranging cog whcels A B and A B in I proper proportion, the speed of the reverse motion of the shaft S as compared with its forward motion may be increased or diminished, as may be desired.

In the example shown in Figs. 5 and 6 bevelwheels are substituted for the plain gear-wheels shown in previous figures. The bevel-wheel A is fast to the loose pulley P, the bevel-wheel B is fast to the shaft S, and the bevel-wheel,

A is mounted on a stud in the interior of the brake-wheel G, and it is in gear with both the wheels A and B. If the belt is thrown onto the loose pulley P, the bevel-wheel A is turned in the direction of arrow 3, and by its action against the cogs of wheel B the brake-wheel O is caused to revolve on the shaft in the .direc- 1. The combination, with a shaft and with a pulley mounted loosely thereon, of a brakewheel mounted loosely on said shaft, a cogwheel carried by the loose pulley, the brake for the brake-wheel, and gears carried by the shaft and by the brakewheel for transmitting a reverse motion from the cog wheel ofthe loose pulley to the shaft when the brake-wheel is retained by the brake.

2. The combination, with a shaft and with a fast pulley and a loose pulley mounted thereon, of a brake-wheel mounted loosely on said shaft, a cog-wheel carried by the loose pulley, the brake for the brake-wheel, and gears carried by the shaft and by the brake wheel for transmitting a reverse motion from the cogwheel of the loose pulley to the shaft when the brake-wheel is retained by the brake.

3. The combination, with a shaft, 8, and the pulley P, mounted loosely thereon, of the gearwheel A, carried by said pulley, the brakewheel 0, mounted loosely on the shaft, the cog-wheel B, carried by the brake-wheel, the cog-wheels A B, mounted in'the arm 1),, carried by the shaftS and gearing with the wheels A and B, respectively, and the brake D, substantially as shown and described.

4. The combination,with a'shaft, S, and with the fast pulley P and the loose pulley P, mounted thereon, of the gear-wheel A, carried by said pulley, the brake-wheel O, mounted loosely on theshaft, the cog-wheel B, carried by the brake wheel, the cog wheels A B. mounted in the arm 5, carried by the shaft S and gearing with the wheels A and B, respectively, and the brake D, substantially as shown and described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES B. MAXSON.

Witnesses:

GEO. P. FENNER, GEORGE GoLFAX. 

